Elements and Performance Criteria

General context
Work must be carried out in compliance with mandatory rules and regulations and IMO Conventions and Codes including the relevant sections of the AMSA Marine Orders and to ensure that applicable codes, guidelines and standards recommended by IMO, the classification societies and maritime industry organisations are taken into account.

Work is performed relatively independently in consultation with a senior engineer under broad operational requirements, with accountability and responsibility for self and others in achieving the prescribed outcomes.

Work involves the application of marine engineering practice to the fabrication and repair of structures and components typically found on a vessel of unlimited propulsion power. Implementation of a broad plan or strategy for shipboard maintenance and repair is required and accountability and responsibility for self and others in achieving the outcomes is involved.

Work requires some judgement in engineering functions related to fabrication and repair operations and procedures. This includes working with a senior engineer on the analysis of fabrication and repair requirements and carrying out established engineering fabrication and repair tasks.

Worksite environment
Structures and components to be fabricated or repaired may include those typically found on any Australian or international commercial vessel of unlimited propulsion power.

Fabrication and repair activities may include:
routine maintenance inspections of vessel's structures, components and fittings
identification of any deterioration of a vessel's structure, fittings and components
identification of faulty structures or fittings and arranging for repair or replacement
fabrication of metal and wooden structures and components to specification
preparation of marine surfaces prior to the application of the prescribed marine coating
selection and application of appropriate marine preservatives or finishes for particular surfaces.

Damage or deterioration of vessel's structure, components and fittings may include:
corrosion to structures, components, hull fittings and equipment
damage caused through an accident
deterioration caused by wear or metal fatigue.

Maintenance tools and equipment may include:
hand tools, including spanners, wrenches, screwdrivers, hacksaws, chipping hammers and scrapers, etc.
electric power tools such as grinders, sanders and drills
welding equipment
milling machines, bench drills and lathes
pneumatic power tools such as grinders, sanders and drills
marine preservative finish application equipment such as brushes, spay guns, rollers
greasing and lubrication tools
rinsing and storage equipment
protective clothing and equipment such as:
eye and ear protection
safety boots and helmet
dust and fume masks.

Fabrication and repair hazards may include:
moving heavy loads using unsafe lifting procedures
unsecure machinery, components or repair equipment
slippery deck
welding equipment
sharp tools and implements
power tools
moving and rotating machinery
flammable liquids, vapours and fuel
faulty machinery equipment handling equipment and lifting gear
using equipment beyond safe working limits
poor housekeeping procedures
non-compliance with safe working procedures
electrical wiring and systems
hot pipes and valves (steam, fuel oil, lubricating oil)
cold pipes and valves (refrigeration and liquefied gas cargoes)
working at heights and in confined spaces.

Sources of information/documents
Documentation/records may include:
ISM Code safety management system plans, procedures, checklists and instructions
vessel and company's planned maintenance system, repair procedures and instructions
machinery and vessel manufacturer's specifications, instructions and recommended procedures
maintenance log, running sheets and records, including computer database of maintenance records, where relevant
vessel's survey as it relates to shipboard structures and components
relevant sections of national and international regulations, IMO Conventions and Codes, including AMSA Marine Orders and class society rules dealing with shipboard maintenance and repair
instructions of relevant Maritime Authorities and class societies concerning shipboard maintenance and repair.

Applicable International, Australian and State/Territory regulations and legislation
Applicable procedures and codes may include:
sections of national and international regulations, IMO Conventions and Codes, including AMSA Marine Orders and class society rules related to shipboard maintenance and repair on vessels of unlimited propulsion power
relevant international, Australian and State/Territory OH&S legislation
relevant international, Australian and State/Territory engineering practice standards.

Critical aspects of evidence to be considered
Assessment must confirm appropriate knowledge and skills to:
Inspect shipboard structures and components for damage, faults and deterioration against specifications on a vessel of unlimited propulsion power
Identify damaged, faulty, worn and deteriorated structures and components and in consultation with the responsible engineer, initiate appropriate action for repair or replacement
Plan and carry out required fabrication and repairs in consultation with the senior engineer in accordance with established marine engineering practice
Exercise all required safety, environmental and hazard control precautions and procedures when carrying out fabrication and repair activities
Identify typical maintenance and repair problems and hazards and take appropriate action
Communicate effectively with others during fabrication and repair operations
Ensure adherence to national and international regulations, IMO Conventions and Codes.

Interdependent assessment of units
This unit of competency must be assessed in conjunction with other engineering maintenance competency units that form part of a job role of an officer in charge of an engineering watch on a commercial vessel of unlimited propulsion power.

Required knowledge and skills
Knowledge of national and international regulations, IMO Conventions and Codes including AMSA Marine Orders applicable to maintenance and repair operations on vessels of unlimited propulsion power
Relevant OH&S and pollution control legislation, policies and procedures
Established engineering practice for the checking, fabrication and repair of marine structures, components, fittings and equipment
Operational characteristics and performance specifications for the different types of shipboard machinery usually found on a vessel of unlimited propulsion power
Procedures for carrying out shipboard machinery testing, trouble-shooting and repair as part of routine maintenance procedures to ensure compliance with the company and survey requirements and established safety rules and regulations
Planned maintenance systems and procedures for the condition monitoring of structures, fittings and components, including responsibilities and requirements covered by various forms of vessel survey
The nature and causes of typical deterioration and damage to vessel structures, components and fittings and the available methods for its detection and related fabrication and repair
Fabrication and repair hazards and problems and appropriate preventative and remedial action and solutions
Safe procedures for handling heavy structures and component parts during fabrication and repair
Safe procedures for the use of hand and power tools, welding and other maintenance equipment during maintenance and repair of shipboard structures, components and fittings
Procedures for the initiation and coordination of temporary and permanent repair and/or replacement procedures on board vessels at sea, alongside and in dry dock
Safety, environmental and hazard control precautions and procedures relevant to shipboard inspection and maintenance operations
Principle features of vessel construction including the layouts and the structural strength of different types of vessels
A basic understanding of the properties and application of materials and structures typically used in the construction of a vessel of unlimited propulsion power and its associated operational machinery
Maintenance and repair records that must be maintained on a vessel to meet the requirements of the company, survey requirements and regulatory authorities
Maritime communication techniques needed during maintenance and repair operations
Knowledge and ability to read and interpret material safety data sheets
Knowledge and ability to read and interpret machinery performance readings and indications
Knowledge and ability to read and interpret vessel and machinery specifications, machinery design drawings, machine drawings, operational manuals, specifications and electrical and control circuit diagrams.
A basic understanding of the components and materials used within various types of vessel's equipment, including:
pumps and pumping systems
heat exchangers
valves and safety fittings
marine air compressors
refrigeration and air conditioning plants
transmission systems including design, manufacture and materials of gear teeth
auxiliary boilers and waste heat units
feed systems for boilers
auxiliary steam turbines
construction of diesel engines including the materials used
fuel pumps used in diesel engines
Basic principles of mechanics as they relate to fabrication and repair activities, including:
stress and strain caused by axial loads
mechanical advantage, velocity ratio and efficiency of lifting and geared marine machinery
effects on stress and stability caused by a change or shift in the mass in a vessel
statics, force as a vector, triangle and polygon of forces, the principle of moments, application to simply supported beams and cranked levers, moments of force, couples, centroids and centres of gravity limited to geometrical shapes, resultant and equilibrant of a system of concurrent coplanar forces
laws of friction for dry surfaces, coefficient of friction (horizontal plane only), lubrication of bearings and plain surfaces
linear displacement, time speed, velocity and acceleration, angular motion.
problems with constant force or force with linear variation, torque, work, energy, power, conservation of energy, potential and kinematic energy, Newton's laws of motion, momentum, rate of change of momentum, centrifugal force
simple lifting machines, graphs of load-effort and load-efficiency, linear law., velocity ratio
mechanical advantage and efficiency of the following machines: wheel and axle, differential pulley blocks, screw jack, Warwick screw, hydraulic jack, worm driven chain blocks and single and double purchase crab winches, reduction gearing
direct stress and strain, Hooke's law, modulus of elasticity, elastic limit, ultimate tensile strength, yield stress, limit of proportionality, safety factor, shear stress.
circumferential and longitudinal stress in thin cylindrical and spherical shells subject to internal pressure
Elementary principles of thermodynamics and heat and heat engines relevant to detection, identification and repair of faults, including:
basic thermodynamic properties of common working fluids.
methods of heat transfer and related problems
principles of heat transfer by conduction, convection and radiation and their application to marine systems
elementary principles of steam plants
saturated dry and wet steam, dryness fraction, superheated steam, enthalpy, steam tables, evaporation.
basic steam plant cycles and explain the function of each component
the combustion process and the calorific value of fuels
AIR/FUEL ratio and the significance of excess air on combustion
the operating cycle of single stage reciprocating air conditioners including methods for calculating the mass of air delivered
clearance volume, its effect on volumetric efficiency and methods of calculating the volumetric efficiency.
advantages of multistaging and intercooling
meaning of gauge and absolute pressure
temperature and temperature scales
SYSTEM INTERNATIONAL (SI) units and common thermodynamic terms and principles.
gases and gas cycles
boilers and evaporators
refrigeration and air conditioning
the use and advantages of insulation.

Resource implications
Access is required to opportunities to either:
participate in a range of practical and theoretical assignments, exercises, case studies and other assessments that demonstrate the skills and knowledge to fabricate and repair structures, components and fittings typically found on a vessel of unlimited propulsion power; and/or
fabricate and repair structures, components and fittings in consultation with the responsible engineer on a commercial or training vessel of unlimited propulsion power.

Consistency in performance
Applies underpinning knowledge and skills when:
inspecting shipboard structures, components and fittings for damage, faults and deterioration against specifications
identifying damaged, faulty, worn and deteriorated structures and components and initiating appropriate action for repair or replacement
planning and carrying out required fabrication and repairs in consultation with the senior engineer
identifying and evaluating fabrication and repair problems and determining an appropriate courses of action
applying safety precautions relevant to mechanical and electrical machinery and equipment maintenance and repair operations
completing mechanical and electrical machinery and equipment maintenance and repair documentation and records.

Shows evidence of application of relevant workplace procedures including:
relevant sections of international Conventions and Codes and AMSA Marine Orders
OHS regulations and hazard prevention policies and procedures
ISM Code safety management system procedures and work instructions on fabrication and repair of structures, components and fittings, including specifications and directions on equipment capability and limitations
following on-board housekeeping processes
waste, pollution and recycling management processes.

Action taken promptly to report and/or rectify damaged and worn structures, components and fittings, in accordance with statutory requirements, company procedures and the ISM Code.

Work is managed, controlled and completed systematically with required attention to detail.

Context for assessment
Assessment of competence must comply with the assessment requirements of the relevant maritime regulations.

Assessment of this unit must be undertaken within relevant marine authority approved and audited arrangements by a registered training organisation:
As a minimum, assessment of knowledge must be conducted through appropriate written/oral examinations
Appropriate practical assessment must occur:
at the registered training organisation, and/or
on an appropriate working or training vessel.